Abstract: A system of displaying hierarchical information in a user interface includes displaying a first plurality of icons aligned in a first arc course on a display device, selecting one of the first plurality of icons using a user input device, rotating the first plurality of icons to position the selected one of the first plurality of icons to a front position of the first arc course in response to the selecting to define a first selection indicator and displaying a second plurality of icons aligned along a second-level arc course, the second-level arc course displayed adjacent to and positioned co-axial with the first arc course, and the second plurality of icons representing sub-hierarchical data for the first selection indicator.